CN202253665U - Solid waste incineration and high-temperature gasification combined system - Google Patents

Solid waste incineration and high-temperature gasification combined system Download PDF

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Publication number
CN202253665U
CN202253665U CN2011203748590U CN201120374859U CN202253665U CN 202253665 U CN202253665 U CN 202253665U CN 2011203748590 U CN2011203748590 U CN 2011203748590U CN 201120374859 U CN201120374859 U CN 201120374859U CN 202253665 U CN202253665 U CN 202253665U
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China
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temperature
gasification
zone
solid waste
air
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CN2011203748590U
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Chinese (zh)
Inventor
毛丁
周乃成
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吉天师能源科技(上海)有限公司
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • Y02P20/129Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Abstract

The utility model aims at providing a solid waste incineration and high-temperature gasification combined system, which can combine treatment methods of incineration and high-temperature gasification of solid waste after optimization of the treatment methods so as to treat the solid waste in bulks while no secondary pollution is generated, and processes of solid waste pretreatment, solid waste incineration and smoke treatment are optimized simultaneously. An incineration gasification furnace comprises an incineration furnace and a high-temperature gasification reactor, and the inside of a hearth in a furnace casing is divided into a drying area, a pre-burning area, a high-temperature burning area and a transition area which are all sequentially arranged according to treatment procedures after the solid waste is pushed into the hearth. An air supply pipeline of an air blower is connected with an air preheater, a hot air pipeline of the air preheater is respectively connected to the drying area, the pre-burning area, the high-temperature burning area and the transition area, and the high-temperature gasification reactor receives slag generated in the high-temperature burning area and flying ash from a smoke treatment system.

Description

Solid waste burning and high-temperature gasification combined system
Technical field
The utility model relates to useless admittedly treatment system.
Background technology
At present solid useless (" solid useless " refer to except that explosive, have radioactivity and inorganic solid all refuses useless) processing method commonly used be burning, it has the big advantage of treating capacity, but the burning disposal mode still has following problem:
A), still have the slag and the flying dust that account for refuse gross weight 15~20% (a small amount of absolutely not) to deal with in addition;
B) and burn the slag that produces behind flying dust that the back produces and the dangerous waste incineration and all belong to hazardous waste; Will inevitably cause secondary pollution; For preventing such secondary pollution; Countermeasure commonly used at present is a landfill after the employing curing-stabilisation, and this countermeasure can not reduce the total amount of danger, can not guarantee the leaching anything but of danger;
C), because organic solid useless a large amount of moisture that contains usually, this greatly reduces useless admittedly calorific value, makes the burning process difficulty that becomes.
High-temperature gasification is the useless admittedly new technology of handling, and it has and handle thoroughly the advantage of (volume of slag and flying dust be about burning 1/5th) and non-secondary pollution (only generation can be used as the synthesis gas of fuel and the vitrifying slag of building materials), and treating capacity is its shortcoming for a short time.
The utility model content
The purpose of the utility model is to provide a kind of solid waste burning and high-temperature gasification combined system; Its will burn with the useless admittedly processing method of high-temperature gasification through combine again a large amount of handle solid useless in and do not produce secondary pollution, optimize useless admittedly pre-treatment, burning and flue gas processing procedure simultaneously.
Be solid waste burning and the high-temperature gasification combined system that realizes said purpose; Be characterized in; Comprise and burn gasification combined system and smoke processing system, burn the gasification combined system and comprise burning gasification furnace, air preheater, air blast, burn gasification furnace and comprise incinerator and high-temperature gasification reactor; Incinerator comprises furnace hearth plate, furnace shell; Furnace hearth plate bears whole stove weight, and whole stove weight is delivered to the basis through furnace hearth plate, and reciprocating fire grate is housed on the furnace hearth plate; Furnace shell is surrounded by refractory brick, heat-barrier coating, stove housing and backplate; The high-temperature gasification reactor by high temperature source, comprise that the high-temperature gasification container and the slag-tapping system of refractory material form, the burner hearth inside in the furnace shell of incinerator is divided into baking zone, preignition zone, high temperature combustion zone, transition region, baking zone, preignition zone, high temperature combustion zone, transition region uselessly advance the handling process behind the burner hearth to set gradually according to solid; The air-supply pipeline of air blast connects air preheater; The hot-air pipeline of air preheater is connected respectively to baking zone, preignition zone, high temperature combustion zone and transition region, and the air-supply pipeline of air inlet place air blast that the air-supply pipeline of air blast is also connected to the bottom of reciprocating fire grate also is connected to burner hearth high temperature combustion zone top; High temperature gasifier receive utilize slag that high temperature combustion zone produces with and from the flying dust of smoke processing system; The fume emission pipeline of burner hearth leads to smoke processing system.
Further; Burn the gasification combined system and also comprise auxiliary combustion equipment; Auxiliary combustion equipment is made up of fuel reserve tank, oil pump, spray bar, electromagnetic valve switch, the atomizer of configuration automatic constant-pressure device, and the oil pump pipeline connects fuel reserve tank, goes out this valve opening solenoid is set between fuel tank and the spray bar; Spray bar connects atomizer, and the injection direction of atomizer is in burner hearth.
Further, the high-temperature gasification reactor is divided into gas-phase reaction district, gasification zone, melting zone, reducing zone and slag district, and the gas-phase reaction district is at the top in high-temperature gasification district, and the gasification zone is in the bottom in gas-phase reaction district, and melting zone is in the bottom of gasification zone; The reducing zone is in the bottom of melting zone; The slag district is in the bottom in high-temperature gasification district.
Further, the fume emission pipeline that burns the gasification furnace discharge couples through heat-exchange system and waste heat boiler, air preheater successively, and waste heat boiler and Turbo-generator Set couple.
Further, burn in the gasification furnace, the high-temperature gasification reactor is connected on the tail end of incinerator and is integral connection, and perhaps the high-temperature gasification reactor is connected with the incinerator split.
Further; Smoke processing system comprises electrostatic precipitator, activated carbon reactor, half dry type reaction tower, sack cleaner, air-introduced machine and chimney, the electrostatic precipitator, activated carbon reactor, half dry type reaction tower, sack cleaner, air-introduced machine and the chimney that set gradually according to the flue gas treatment process.
Further, solid waste burning and high-temperature gasification combined system also comprise preprocessing system, and preprocessing system comprises storage facility, breaker and de-watering apparatus, and storage facility, breaker and de-watering apparatus set gradually according to solid useless treatment process.
Further, storage facility disposes the draining system.
Further, between preprocessing system and burning gasification combined system, percentage feeder is set, percentage feeder disposes the parallel hydraulic pressure push pedals of many groups, and the direction that is retracted into of hydraulic pressure push pedal is burning gasification combined system.
The beneficial effect of the utility model is:
The utility model a large amount of handle solid useless in and do not produce secondary pollution, optimize useless admittedly pre-treatment, burning and flue gas processing procedure simultaneously.
Owing to adopt the aforementioned techniques scheme, the utility model is combined two kinds of solid useless processing methods after optimizing again, and the solid waste burning after therefore single cover is optimized and the day output of high-temperature gasification combined system at least can be up to 500 tons/day; Do not produce any secondary pollution; Dewater, conveying, charging and combustion process be more stable; The course of reaction of flue gas and additive is more abundant; Reduce landfill, turn waste into wealth.
Description of drawings
Fig. 1 is the schematic diagram of structure of solid waste burning and high-temperature gasification combined system.
Fig. 2 is the process chart of solid waste burning and high-temperature gasification combined system.
The specific embodiment
In the description of back, in the time of with reference to Fig. 1 with reference to Fig. 2, " solid useless " refer to except that explosive, have all refuses radioactivity and inorganic solid the giving up.
As shown in Figure 1, solid waste burning and high-temperature gasification combined system comprise preprocessing system 100, burn gasification combined system 200 and smoke processing system 300.Solid useless offering through preprocessing system 100 burned gasification combined system 200; Burning gasification combined system 200 intercouples with smoke processing system 300; Flue gas behind at first burning gasification combined system 200 burnings, the high-temperature gasification enters into smoke processing system 300 and handles, and the flying dust in next smoke processing system 300 can enter into burning gasification combined system 200 again and handle.
Continuation is with reference to Fig. 1, and preprocessing system 100 comprises storage facility 10, breaker 13 and de-watering apparatus 12.Preferably, storage facility 10 disposes the draining system.Can carry out useless admittedly conveying through conveyer between breaker 13 and the storage facility 10.De-watering apparatus 12 for example is an extrusion dehydration, through the continuously extruded dehydration of hydraulic cylinder.Gu it is useless by being discharged in the de-watering apparatus 12 after breaker 13 fragmentations, to dewater.
Preferably; Between preprocessing system 100 and burning gasification combined system 200, percentage feeder 14 is set; Gu will being given up quantitatively to push by three to four groups of parallel hydraulic pressure push pedals admittedly, useless entering percentage feeder 14 backs burn gasification combined system 200; Respectively organizing hydraulic pressure push pedal fltting speed and can adjusting respectively of horizontal direction keeps best fired state on fire grate to guarantee to give up admittedly.
Continuation is burned gasification combined system 200 and is comprised burning gasification furnace 15, air preheater 17, air blast 11 with reference to Fig. 1.
The structure of burning gasification furnace 15 can form on the basis of existing furnace binding, and it is a steel structure assembly, is made up of furnace hearth plate, furnace shell and high-temperature gasification reactor.Furnace hearth plate mainly bears whole stove weight, and whole stove weight is delivered to the basis through furnace hearth plate.Reciprocating fire grate is housed on the furnace hearth plate, and it is reciprocating that reciprocating fire grate does not stop under the promotion of hydraulic cylinder, and this motion causes giving up admittedly and in combustion process, constantly stirs and fully burning.Furnace shell is made up of refractory brick, heat-barrier coating, stove housing and backplate etc., the main guide functions that plays insulation and high-temperature flue gas.The high-temperature gasification reactor is made up of high temperature source, the high-temperature gasification container that comprises refractory material and slag-tapping system etc., and all here slags and flying dust will be gasified.Burner hearth inside in the furnace shell is divided into five working regions and is respectively baking zone, preignition zone, high temperature combustion zone, transition region.Gu behind the useless propelling burner hearth; At first carrying out rapid draing in the oven dry section handles; The solid useless preignition zone that pushes that to dry basically then, at this moment useless admittedly initial burning, and along with the preceding of fire grate and then make the useless admittedly high temperature combustion zone that gets into; Useless admittedly along with the fire grate motion and constantly stir at high temperature combustion zone, make it abundant after-flame.The stroke of fire grate and to push away speed be automatically control is to guarantee best burning effect.The flying dust that the slag of after-flame and flue gas are handled directly gets into the high-temperature gasification reactor.
Air blast 11 is used to provide wind twice; Wherein a wind divides two the tunnel; One the tunnel gets into air preheater 17, and the hot-air behind air preheater 17 is delivered to fire grate baking zone, preignition zone, high temperature combustion zone and transition region respectively, and one the road enters into air inlet place of the bottom of reciprocating fire grate.Secondary wind is delivered to burner hearth high temperature combustion zone top; The high-voltage secondary wind that sprays into makes high-temperature flue gas (900~1100 ℃) produce the disturbance eddy current; Impel the unburned gas after-flame, guarantee flue gas oxygen content>6%, and increase the time of staying of flue gas in burner hearth and the temperature etc. of regulating burner hearth.The wind regime of air blast 11 can be discharged peculiar smell in the storage facility 10 like this at storage facility 10, makes the air in the storage facility 10 keep flowing.
Preferably, when flue gas temperature of hearth outlet during less than 850 ℃, auxiliary combustion equipment will start automatically, and this is for the servicing unit of guaranteeing that emission compliance is provided with, does not under normal circumstances use.It is made up of fuel reserve tank, oil pump, automatic constant-pressure device, oil pipe, switch, atomizer etc.Oil pump is sent into light diesel fuel in the constant voltage fuel reserve tank; Behind electromagnetic valve switch, send into spray bar; Spray bar is heated by high-temperature hot air, after the atomizer atomizing, sprays into burner hearth with high-pressure hot wind, makes it burning and produces high temperature; Prevent macromolecular compound toxic and harmful that low-temperature burning produces, reduce pollution air.
The high-temperature gasification reactor is to utilize the various high temperature source that get with the residue that burns---slag (if burn hazardous waste, slag of the corresponding end also is a hazardous waste) and flying dust (respectively from, electrostatic precipitator 19, activated carbon reactor 22, half dry type reaction tower 23 and sack cleaner 24) high-temperature gasification.High-temperature gasification reactor 151 can be divided into gas-phase reaction district, gasification zone, melting zone, reducing zone and slag district again, and its optional a kind of structure is:
A, gas-phase reaction district are at the top in high-temperature gasification district, because the enough temperature and the time of staying are arranged, all gasification compositions will and convert the synthesis gas of being made up of CO, CO2 and H2 etc. in this regional cracking.
B. the gasification zone is in the bottom in gas-phase reaction district, and same because the enough temperature and the time of staying are arranged, all organic matters will be gasified in this zone.
C. melting zone is in the bottom of gasification zone, and the temperature here is enough to melt all inorganic constituents in the solid waste, produces liquid slag and metal inflow reducing zone along with the inorganic matter fusing.
D. the reducing zone is reduced into metal in the bottom of melting zone at these some metal oxides of zone.
E. the slag district is in the bottom in high-temperature gasification district, and the slag of all fusings and metal are being discharged before in this collection through slag notch.Because there is the sufficiently high degree of depth in the slag district, and because density is different, the bottom that metal is concentrated, and above slag floats over.The slag of fusing and metal are discharged the high-temperature gasification district through slag notch.Discharge process can be intermittently, also can be continuous, and this depends on the quantity of inorganic matter.
Residue after the gasification is synthesis gas (can return burner hearth to improve fire box temperature) and vitrifying slag (can be used as construction material).
Burn gasification furnace 15 and can on the basis of existing incinerator, directly improve formation; Promptly the afterbody at incinerator connects the high-temperature gasification reactor; The slag of incinerator directly is discharged in the high-temperature gasification reactor, the flying dust in the smoke processing system 300 is incorporated into the high-temperature gasification reactor.As shown in Figure 2, hazardous waste is without preprocessing system 100, and directly enters into the high-temperature gasification reactor.
Burn gasification furnace 15 and also can be formed by connecting, the slag of incinerator is transported in the high-temperature gasification reactor through conveying arrangement independently incinerator, high-temperature gasification reacting furnace.
Burn gasification furnace 15 and also can in same furnace shell, form, the high-temperature gasification district promptly is set in the furnace shell of incinerator by independently incinerator, high-temperature gasification reacting furnace.
Via burning the flue gas entering boiler 18 that gasification furnace 15 is discharged, utilize the waste heat of flue gas that boiler 18 is heated, so that boiler 18 produces steam, the steam of generation is used for Turbo-generator Set 21.The thermal source of air preheater 17 can be from through the flue gas of boiler 18, and this moment, flue-gas temperature was still higher, can through heat exchanger for example heat exchange coil come the wind of the introduction of heater blower 11.
Continuation is with reference to Fig. 1, and smoke processing system 300 comprises electrostatic precipitator 19, activated carbon reactor 22, half dry type reaction tower 23, sack cleaner 24, air-introduced machine and chimney 25.
Flue gas gets into after the electrostatic precipitator 19 of two electric fields the further dedusting of flue gas, and dust removal efficiency can reach 96%, handles material usage to reduce follow-up flue gas, and prolongs the life-span of follow-up fume treatment auxiliary.
Then flue gas fully reacts with active carbon in activated carbon reactor 22, and to catch dioxin and heavy metal wherein, then flue gas fully reacts with lime white in half dry type reaction tower 23, with desulfurization and removal acidic materials.
Flue gas all has automatic turbulent flow usefulness at activated carbon reactor 22, back flue gas at half dry type reaction tower 23, makes the abundant hybrid reaction of flue gas and additive to reach best reaction effect, and movement-less part, exempted mechanical wear.
In an embodiment of the utility model, activated carbon reactor 22 is made up of active carbon bunker, dosed system, conveyance conduit and nozzle etc.
In an embodiment of the utility model, half dry type reaction tower 23 is made up of lime bunker, pulping tank, quantitative lime slurry pump and filter etc.
Then flue gas gets into sack cleaner 24 with finally taking off dirt in the flue gas, and satisfies final discharging designing requirement.Last flue gas is introduced smoke stack emission by air-introduced machine 25.

Claims (9)

1. solid waste burning and high-temperature gasification combined system; It is characterized in that; Comprise and burn gasification combined system and smoke processing system, burn the gasification combined system and comprise burning gasification furnace, air preheater, air blast, burn gasification furnace and comprise incinerator and high-temperature gasification reactor; Incinerator comprises furnace hearth plate, furnace shell; Furnace hearth plate bears whole stove weight, and whole stove weight is delivered to the basis through furnace hearth plate, and reciprocating fire grate is housed on the furnace hearth plate; Furnace shell is surrounded by refractory brick, heat-barrier coating, stove housing and backplate; The high-temperature gasification reactor by high temperature source, comprise that the high-temperature gasification container and the slag-tapping system of refractory material form, the burner hearth inside in the furnace shell of incinerator is divided into baking zone, preignition zone, high temperature combustion zone, transition region, baking zone, preignition zone, high temperature combustion zone, transition region uselessly advance the handling process behind the burner hearth to set gradually according to solid; The air-supply pipeline of air blast connects air preheater; The hot-air pipeline of air preheater is connected respectively to baking zone, preignition zone, high temperature combustion zone and transition region; The air-supply pipeline of air blast is also connected to air inlet place of the bottom of reciprocating fire grate, and the air-supply pipeline of air blast also is connected to burner hearth high temperature combustion zone top; High temperature gasifier receive utilize slag that high temperature combustion zone produces with and from the flying dust of smoke processing system; The fume emission pipeline of burner hearth leads to smoke processing system.
2. solid waste burning as claimed in claim 1 and high-temperature gasification combined system; It is characterized in that burn the gasification combined system and also comprise auxiliary combustion equipment, auxiliary combustion equipment is made up of fuel reserve tank, oil pump, spray bar, electromagnetic valve switch, the atomizer of configuration automatic constant-pressure device; The oil pump pipeline connects fuel reserve tank; Go out this valve opening solenoid is set between fuel tank and the spray bar, spray bar connects atomizer, and the injection direction of atomizer is in burner hearth.
3. solid waste burning as claimed in claim 1 and high-temperature gasification combined system; It is characterized in that; The high-temperature gasification reactor is divided into gas-phase reaction district, gasification zone, melting zone, reducing zone and slag district; The gas-phase reaction district is at the top in high-temperature gasification district, and the gasification zone is in the bottom in gas-phase reaction district, and melting zone is in the bottom of gasification zone; The reducing zone is in the bottom of melting zone; The slag district is in the bottom in high-temperature gasification district.
4. solid waste burning as claimed in claim 1 and high-temperature gasification combined system is characterized in that, the fume emission pipeline that burns the gasification furnace discharge couples through heat-exchange system and waste heat boiler, air preheater successively, and waste heat boiler and Turbo-generator Set couple.
5. solid waste burning as claimed in claim 1 and high-temperature gasification combined system is characterized in that, burn in the gasification furnace, and the high-temperature gasification reactor is connected on the tail end of incinerator and is integral connection, and perhaps the high-temperature gasification reactor is connected with the incinerator split.
6. solid waste burning as claimed in claim 1 and high-temperature gasification combined system; It is characterized in that; Smoke processing system comprises electrostatic precipitator, activated carbon reactor, half dry type reaction tower, sack cleaner, air-introduced machine and chimney, the electrostatic precipitator, activated carbon reactor, half dry type reaction tower, sack cleaner, air-introduced machine and the chimney that set gradually according to the flue gas treatment process.
7. solid waste burning as claimed in claim 1 and high-temperature gasification combined system; It is characterized in that; Also comprise preprocessing system, preprocessing system comprises storage facility, breaker and de-watering apparatus, and storage facility, breaker and de-watering apparatus set gradually according to solid useless treatment process.
8. solid waste burning as claimed in claim 7 and high-temperature gasification combined system is characterized in that storage facility disposes the draining system.
9. solid waste burning as claimed in claim 7 and high-temperature gasification combined system; It is characterized in that; Between preprocessing system and burning gasification combined system, percentage feeder is set, percentage feeder disposes the parallel hydraulic pressure push pedals of many groups, and the direction that is retracted into of hydraulic pressure push pedal is burning gasification combined system.
CN2011203748590U 2011-09-29 2011-09-29 Solid waste incineration and high-temperature gasification combined system CN202253665U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103471404A (en) * 2013-09-05 2013-12-25 山东金升有色集团有限公司 Unit of recovering flue gas waste heat and dust in nonferrous metal smelting
CN106196092A (en) * 2016-08-26 2016-12-07 安徽省新能电气科技有限公司 The heat energy recycle device and method that flying ash of garbage cremator high-temperature melting method processes
CN106287774A (en) * 2016-07-29 2017-01-04 太仓英达锅炉设备有限公司 A kind of high temperature flue-gas from boiler waste heat recovery and electrically separated conveying technique thereof
CN106500108A (en) * 2016-12-14 2017-03-15 北京神雾环境能源科技集团股份有限公司 A kind of system and method for integrated treatment rubbish
TWI596621B (en) * 2012-06-29 2017-08-21 太平洋水泥股份有限公司 Radioactive cesium removing apparatus
CN109185897A (en) * 2018-07-20 2019-01-11 加拿大艾浦莱斯有限公司 A kind of gas purification of high chlorine dangerous waste incineration flue gas and flying dust treating system and method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI596621B (en) * 2012-06-29 2017-08-21 太平洋水泥股份有限公司 Radioactive cesium removing apparatus
CN103471404A (en) * 2013-09-05 2013-12-25 山东金升有色集团有限公司 Unit of recovering flue gas waste heat and dust in nonferrous metal smelting
CN106287774A (en) * 2016-07-29 2017-01-04 太仓英达锅炉设备有限公司 A kind of high temperature flue-gas from boiler waste heat recovery and electrically separated conveying technique thereof
CN106196092A (en) * 2016-08-26 2016-12-07 安徽省新能电气科技有限公司 The heat energy recycle device and method that flying ash of garbage cremator high-temperature melting method processes
CN106500108A (en) * 2016-12-14 2017-03-15 北京神雾环境能源科技集团股份有限公司 A kind of system and method for integrated treatment rubbish
CN109185897A (en) * 2018-07-20 2019-01-11 加拿大艾浦莱斯有限公司 A kind of gas purification of high chlorine dangerous waste incineration flue gas and flying dust treating system and method

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C14 Grant of patent or utility model
GR01 Patent grant
LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model
EE01 Entry into force of recordation of patent licensing contract

Assignee: Ji Fang Power Technology (Shanghai) Limited by Share Ltd

Assignor: Jitianshi Energy Technology (Shanghai) Co., Ltd.

Contract record no.: 2012310000176

Denomination of utility model: Solid waste incineration and high-temperature gasification combined system

Granted publication date: 20120530

License type: Exclusive License

Record date: 20120923